The Popular Science Review, Vol. 15: A Quarterly Miscellany of Entertaining and Instructive Articles on Scientific Subjects (Classic Reprint) - Hardcover

Inhaltsangabe

Excerpt from The Popular Science Review, Vol. 15: A Quarterly Miscellany of Entertaining and Instructive Articles on Scientific Subjects

The greatest results are expected from the Southern Ocean. The specific gravities of surface and of bottom water are to be compared, and that of intermediate depths, when serial sound ings are taken.

The degree of transparency of the water should be deter mined by Siemens' photographic apparatus, and by lowering a white plate to measured depths.

Observations should be made on the relation, discovered by Professor Schouw, between barometric height and the lati tude of the observation. It seems that there are certain meridians of high and of low pressure.

The thermometer and barometer should be observed every two hours. Tidal observations may be made by means of a graduated pole.

It is desirable, when enough tidal observations have been made, to settle the mean level of the sea, and that a permanent beach mark should be established, recording the date and height above such mean level.

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